<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
?>

<?php $form = ActiveForm::begin();?>

<?= $form->field($model, 'name')?>
<?= $form->field($model, 'email')?>
<div class="form-group">
    <?=Html::submitButton('Submit', ['class'=>'btn btn-primary'])?>
</div>

<?php ActiveForm::end();?>